Home / 615,748,970.92-849,411,421.86-380,724,503.08

Finding the Fourth Proportional to 615,748,970.92, 849,411,421.86 and 380,724,503.08

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Solution

The fourth proportional to 615,748,970.92, 849,411,421.86 and 380,724,503.08 is: 525,200,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,748,970.92 : 849,411,421.86 = 380,724,503.08 : x
  2. Step 2: Convert to fraction form
    615,748,970.92/849,411,421.86 = 380,724,503.08/x
  3. Step 3: Cross multiply
    615,748,970.92x = 849,411,421.86 × 380,724,503.08
  4. Step 4: Simplify right side
    615,748,970.92x = 323,391,741,498,124,736
  5. Step 5: Solve for x
    x = 323,391,741,498,124,736/615,748,970.92
  6. Step 6: Final answer
    x = 525,200,620.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.